Every question from past board papers on Energy flow and ecological pyramids, newest paper first. Open any question for its full worked answer.
Given below are two statements :
Statement I : In ecosystem, there is unidirectional flow of energy of sun from producers to consumers.
Statement II : Ecosystems are exempted from 2nd law of thermodynamics.
In the light of the above statements, choose the most appropriate answer from the options given below :
In an ecosystem if the Net Primary Productivity (NPP) of first trophic level is
\(100x\,(kcal\,m^{-2})\,yr^{-1}\), what would be the GPP (Gross Primary Productivity) of the third trophic level of the same ecosystem?
Which of the following statements is not correct ?
Match the trophic levels with their correct species examples in grassland ecosystem.
(a) Fourth trophic level (i) Crow
(b) Second trophic level (ii) Vulture
(c) First trophic level (iii) Rabbit
(d) Third trophic level (iv) Grass
Select the correct option :
Which of the following ecological pyramids is generally inverted ?
What type of ecological pyramid would be obtained with the following data ?
Secondary consumer : 120 g
Primary consumer : 60 g
Primary producer : 10 g
The highest DDT concentration in aquatic food chain shall occur in
